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(No Model.) 2 Sheets-Sheet 1.

T. GARNE'Y. COMPLETE STROKE MECHANISM FOR v CASH REGISTERS. No. 482,161. Patented Sept; 6', 1892.

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No. 482,161. Patented Sept. 6, 1892.

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'THOMAS CARNEY, OF DAYTON, OHIO, ASSIGNOR TO THE NATIONAL CASH REGISTER COMPANY, OF SAME PLACE.

COMPLETE-STROKE MECHANISM FOR CASH-REGISTERS.

SPECIFICATION forming part of Letters Patent No.482,161, dated September 6, 1892.

Application filed May 21,1892- Serial No, 433,839. (No model.)

To all whom it may concern: cause the rack C to turn the pinion B and Be it known that I, THOMAS OARNEY, a citishaft A in the direction of the arrow. As the zen of the United States, residing at Dayton, rack-bars approach theirnpper limit of stroke in the county of Montgomery and State of the left-hand end of the plate F will engage 55 Ohio, have invented a certain new and useful the spring K and be thereby pressed toward Mechanical Movement, of which the followthe right, the engagement of thelug Gwith the ing is a description, reference being had to left-hand side of the rib I-I preventing moveto the accompanying drawings, forming ament of the plate and rack-bars in that direcpart of this specification. tion, however, until thelug has cleared the up- 6o :0 Myinvention consists, primarily, in a novel per end of the rib. This it doesj ust at the end combination of devices for converting recipof the upward stroke of the rack-bars, so that rocating into rotary motion, and, secondly, in the latter are then thrown to the right by the the application of such devices to a cash-reg. spring K, to the position shown in Fig. 2, and lster or similar machine, for the purpose here- I the rack D engaged with the pinion B. Dnr- 65 inafter explained. ing the downward stroke of the rack-bars the In the accompanying drawings, Figurelisa rack D will turn the pinion and shaft in the vertical section of a cash-register, showing the same direction in which they had been turned application thereto of my novel means for by the rack C during the upward movement of converting the reciprocating motion of the the bars. WVhen the parts approach their 70 2o operating-keys into rotary motion in a shaft lower limit of stroke, the right-hand end of or other revoluble part: Fig. 2, a view correthe plate F will engage the spring L and be spending to Fig. 1, with the parts in a dilferthereby pressed toward the left, the engageent position; Fig. 3, a detail showing the apment of the lug G with the right-hand side plication of a ratchet and pawl to the revoof the rib H preventing movement in this di- 75 luble shaft of Figs. 1 and 2, for a purpose to rection, however, until the lug clears the be eXplained. lower end of the rib,whereupon the rack-bars The same letters of reference are used to will be thrown to the left again into the posiindicate identical parts in all the figures. tion shown in Fig. 1 and the rack C re-en- A represents a revoluble shaft suitably gaged with the pinion. In this manner the So journaled in the framework and having fast reciprocating movements of the rack-bars are upon itapinion B. Upon opposite sides of this converted into rotary movement in the pinpinion are two rack-bars O D,carried bya reion and shaft. The rack-bars may be given ciprocating'plate Eand adapted to alternately their reciprocating movements by any suitmesh with the pinion B. In this instance the able means and in any suitable manner, de- 85 upper ends of the rack-bars are united by an pending upon the purpose for which and the integral cross-plate F,though it is not essential relations in which my invention is employed. that their upper ends should be connected. In the use of it in a cash-register the rack Projecting from the farther side of the plate bars are given their reciprocating movement F in the views shown in the drawings is a pin by what is commonly called the vibrating 9o 40 or lug G, adapted to cooperate with a rib or frame, which consists of a bar of any suitguide H upon the adjacent side plate of the able shape extending across and resting upon frame. Secured t0 lugs I J upon said side the series of keys and adapted to rise and plate of the frameare two curved springs K L, fall with them. In the machine illustrated adapted to co-operate with the opposite ends in the drawings this cross-bar M, extending 9 5 of the plate F,in the manner tobe described. across and resting upon the upper sides of The plate E and rack-bars are capable of all of the key-levers N near their rear ends, slight oscillatory motion in addition to their is hung by side arms 0 at its opposite ends reciprocating movements to permit the racks to the side frames of the machine at P, so to be alternately engaged with the pinion. that whenever the front end of any key-lever 10: With the parts in the position shown in Fig. is depressed this bar will be lifted, and when 1 the'lifting of the plateE and rack-bars will the key is released the bar will drop back 5 througha transverse slot R in the plate E,

which carries the rack-bars, so that whenever the bar M is lifted by the operation of one of the key-levers the rack-bars will be lifted by it, and when the bar M drops back to normal position the rack-bars will be carried downward with it. The lower end of the plate E has in it a longitudinal slot S, in which fits a stud T, projecting inward from the side frame of the machine and by which the plate E is partially supported in position and guided in its movements.

My invention is employed in the machine shown in the drawings as part of a mechanism for insuring the full strokes of the operated keys, and to that end I combine with it a ratchet U, Fig. 3, which is faston the shaft A and with which co-operates a pawl V, which prevents any backward movement of the ratchet. The employment of this ratchet and pawl prevents any retrograde movement of the rack-bars in either direction. Thus if the rack-bars are started upward with the parts in the position shown in Fig. 1 they cannot move downward until they have been given their full upward stroke and the rack 0 been disengaged from the pinion Band the rack D engaged with it, and when the bars begin their downward movement, with the rack D in mesh with the pinion, they cannot move upward until they complete their full downward stroke and the rack D is disengaged from the pinion and the rack C re-engaged with it. Inasmuch as the plate E carries the vibrating frame with it in each direction the ratchet and pawl insure full upward and downward strokes of this frame, and I compel the operated keys to make full strokes in each direction without any retrograde movement by coupling each of them to the vibrating frame as soon as the key is displaced from normal position. It is not a new idea to couple the operated keys to such a vibrating frame nor to combine with such frame a ratchet and pawl or other suitable device for compelling the full movement of the frame in each direction, and in carrying out myinvention the keys may be coupled to such frame in any usual or suitable manner.

In the drawings I have illustrated a method whichis commonly employed in manyof such machines now in use. The cross-bar M of the vibrating frame is provided with a rearwardly-projecting flange W, resting upon the upper sides of the keys immediatelyin front of the open mouths of hooks X, formed thereon. Inasmuch as the rear edge of the flange W moves in the arc of a circle whose radius is much shorter than that of the circle in which the hooks X move, the arcs of the two circles intersect each other at a point a short distance above the normal position of the rear edge of the flange, and it results from this that whenever the front end of any key-lever is depressed and its rear end lifted the flange W will enter the open mouth of the hook X on such key and the key thereby become hooked or coupled to the vibrating frame and obliged to move with it until it has completed its upward stroke and returned to substantially normal position. It will thus be seen that when the front end of any key-lever has been depressed far enough for its rear end to become coupled to the vibrating frame such key cannot make any retrograde movement, but must be given its full stroke in each direction.

It is evident that in the employment ofmy invention in a cash-register in the manner and for the purpose above described the shaft A performs no duty, except to support the the pinion Band afford a rigid connection for the latter with the ratchet U. Where my in vention is employed for the sole purpose of insuring full strokes of the operated keys, therefore, the pinion B may be loose on the shaft A or any other suitable support, and the ratchet U be secured directly to the side of the pinion or upon the hub or sleeve which carries the pinion. My invention may, however, be employed in a cash-register for other purposes than to compel the full strokes of the operated keys.

The engagement of the pawl V with the ratchet U compels the full strokes of the various parts in both directions, and this is generally desirable; but where it is not essential this feature of my invention may be employed to insure a full stroke of the parts in one direction only. The ratchet-disk in such case will be provided with teeth upon oneupon the upper end of one or the other of the bars.

Having thus fully described my invention, I claim- 1. The combination of a revoluble pinion, two reciprocating racks adapted to alternately engage the pinion, means for shifting the racks at the opposite ends of their strokes to disengage one rack from the pinion and engage the other with it, means for holding the racks in their shifted positions, a ratchet revoluble with the pinion, and a pawl c00pcrating with the ratchet, substantially as described.

2. The combination of a series of operatingkeys, a movable bar common to all of the keys, to which bar the keys become attached when operated, a revoluble pinion, two reciprocating racks actuated by said movable bar and adapted to alternately engage the pinion, means for shifting the racks at the. ends of their strokes to disengage one rack from the pinion and engage the other with it, means for holding the racks in their shifted positions,

a ratchet revoluble with the pinion, and a pawl co-operating with the ratchet, substantially as and for the purpose described.

3. The combination of a series of operatingkeys, a movable bar common to all of the keys, to which bar the keys become attached when operated, a revoluble pinion, two reciprocating racks actuated by said movable bar and adapted to alternately engage the pinion, means for shifting the racks at the ends of their strokes to disengage one rack from the pinion and engage theother with it, a projection moving with the racks and co-operating with a fixed guide-rib for holding the racks in their shifted positions, a ratchet revoluble with the pinion, and a pawl co-operating with the ratchet, substantially as and for the purpose described.

4. The combination of a series of operatingkeys, a movable bar com mon to all of said keys, a revoluble pinion, two reciprocating racks actuated by said movable bar and adapted to alternately engage the pinion, means for shifting the racks at the ends of their strokes to disengage one rack from the pinion and engage the other with it, and means for holding.

the racks in their shifted positions, whereby the successive operations of the keys will rotate the pinion in the same direction, substantially as described.

5. The combination of a series of operatingkeys, a movable bar common to all of said keys, a revoluble pinion, two reciprocating racks actuated by said movable bar and adapted to alternately engage the pinion, means for shifting the racks at the ends of their strokes to ingplate E, carrying the racks O D upon opposite sides of the pinion B, the cross-plate F, connecting the upper ends of the racks, the springs K L, co-operating with the plate F, the rib H, and the projection G on the plate F co-operating with the rib H, substantially as described.

8. The combination of the revoluble shaft A, the pinion B and ratchet U fast thereon, the pawl V, the reciprocating plate E, carrying the racks G D on opposite sides of the pinion, the plate F at the upper ends of the racks, the springs K L, the rib H, and the projection G on the plate F co-operating with the rib H, substantially as described.

9. The combination of the pinion B, the reciprocating plate E, carrying the racks C D on opposite sides of said pinion, the plate F at the upper ends of the racks, the springs K L, the rib H, the projection Gon the plate F co-operating with the rib H, the key-levers N, and the vibrating cross bar or frame common thereto and connected to the plate E, substantially as described.

10. The combination of the pinion B, the ratchet U, moving therewith, the pawl V, the reciprocating plate E, carrying the racks O D on opposite sides of the pinion B, the plate F at the upper ends of the racks, the springs K L, the rib H, the projection G on the plate F cooperating with the rib H, the vibrating cross bar or frame, and the series of key-levers adaptedto be coupled to said bar when displaced from normal position, substantially as described.

11. The combination of the revoluble shaft A, the pinion B, and ratchetU fast thereon, the pawl V, the reciprocating plate E, carrying the racks O D on opposite sides of the pinion B and provided at its lower end with the longitudinal slot S, embracing the stud T 011 the frame, the plate F at the upper ends of the racks, the springs K L, the rib H, the projection on the plate F co-operating with the rib H, the series of key-levers N, provided with hooks X, and the vibrating frame having the fiangeW co-operating with said hooks and provided, also, with a pin Q, engaging the transverse slot It in the plate E, substantially as described.

THOMAS OARNEY.

Witnesses:

JOSEPH A. WoRrMAN, F. A. L. SNEOKNER. 

